Evaluate the buyer's negotiation performance.

Task: {task}

Negotiation Result:
{result}

Rate each dimension on a scale of 1-5:
- Effectiveness of Strategies: How well did the buyer negotiate?
- Progress and Outcome: Did the buyer achieve a favorable outcome?
- Interaction Dynamics: How well did the buyer engage with the seller?

Respond with a JSON object:
{{"effectiveness_of_strategies": <score>, "progress_and_outcome": <score>, "interaction_dynamics": <score>}}
